> 数学 >
(x^2 +4x+4-y^2)除以(x+y+2)
人气:410 ℃ 时间:2020-07-26 01:46:51
解答
(x^2 +4x+4-y^2)除以(x+y+2)
=[(x+2)²-y²]÷(x+y+2)
=(x+2+y)(x+2-y)÷(x+y+2)
=x+2-y
推荐
猜你喜欢
© 2026 79432.Com All Rights Reserved.
电脑版|手机版